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https://issues.apache.org/jira/browse/HDFS-16788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ayush Saxena resolved HDFS-16788.
---------------------------------
Resolution: Not A Bug
Reach out to the user mailing list, Jira is for tracking bugs not for user
queries
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> could only be written to 2 of the 3 required nodes for RS-3-2-1024k. There
> are 50 datanode(s) running and no node(s) are excluded in this operation
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-16788
> URL: https://issues.apache.org/jira/browse/HDFS-16788
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Affects Versions: 3.1.0
> Reporter: ruiliang
> Priority: Major
> Attachments: image-2022-09-30-14-14-29-963.png,
> image-2022-09-30-14-14-44-164.png
>
>
>
> !image-2022-09-30-14-14-44-164.png!
> ||Configured Capacity:|3.02 PB|
> ||Configured Remote Capacity:|0 B|
> ||DFS Used:|1.39 PB (45.96%)|
> ||Non DFS Used:|0 B|
> ||DFS Remaining:|1.62 PB (53.67%)|
> ||Block Pool Used:|1.39 PB (45.96%)|
> ||DataNodes usages% (Min/Median/Max/stdDev):|8.20% / 32.44% / 98.85% / 37.30%|
> ||[Live
> Nodes|http://fs-hiido-yycluster06-yynn1.hiido.host.yydevops.com:50070/dfshealth.html#tab-datanode]|50
> (Decommissioned: 0, In Maintenance: 0)
> |
> I've been working hard in the background to balance the data,
> but before I discp when
> {code:java}
> hdfs balancer -Ddfs.datanode.balance.max.concurrent.moves=300
> -Ddfs.balancer.moverThreads=1200
> -Ddfs.datanode.balance.bandwidthPerSec=1073741824 -fs hdfs://yycluster06
> -threshold 50
> {code}
> {code:java}
> hadoop distcp -Dmapreduce.task.timeout=600000 -skipcrccheck -update hdfs://01
> hdfs://02xx
> syslog
> ...
> 2022-09-30 14:22:50,724 WARN [main] org.apache.hadoop.hdfs.DFSOutputStream:
> Cannot allocate parity block(index=4, policy=RS-3-2-1024k). Not enough
> datanodes? Exclude nodes=[] 2022-09-30 14:22:58,389 INFO [main]
> org.apache.hadoop.hdfs.DFSOutputStream: replacing previously failed streamer
> #3: failed, blk_-9223372036808890525_3095130 2022-09-30 14:22:58,389 INFO
> [main] org.apache.hadoop.hdfs.DFSOutputStream: replacing previously failed
> streamer #4: failed, block==null 2022-09-30 14:23:21,547 WARN [main]
> org.apache.hadoop.hdfs.DFSOutputStream: Cannot allocate parity block(index=4,
> policy=RS-3-2-1024k). Not enough datanodes? Exclude nodes=[] 2022-09-30
> 14:23:29,319 INFO [main] org.apache.hadoop.hdfs.DFSOutputStream: replacing
> previously failed streamer #4: failed, blk_-9223372036808889612_3095200
> 2022-09-30 14:23:36,950 WARN [main] org.apache.hadoop.hdfs.DFSOutputStream:
> Cannot allocate parity block(index=4, policy=RS-3-2-1024k). Not enough
> datanodes? Exclude nodes=[] 2022-09-30 14:23:44,822 INFO [main]
> org.apache.hadoop.hdfs.DFSOutputStream: replacing previously failed streamer
> #4: failed, blk_-9223372036808888572_3095307 2022-09-30 14:23:44,837 WARN
> [main] org.apache.hadoop.hdfs.DFSOutputStream: Cannot allocate parity
> block(index=4, policy=RS-3-2-1024k). Not enough datanodes? Exclude nodes=[]
> 2022-09-30 14:23:52,306 INFO [main] org.apache.hadoop.hdfs.DFSOutputStream:
> replacing previously failed streamer #4: failed, block==null 2022-09-30
> 14:23:52,321 WARN [main] org.apache.hadoop.hdfs.DFSOutputStream: Cannot
> allocate parity block(index=4, policy=RS-3-2-1024k). Not enough datanodes?
> Exclude nodes=[] 2022-09-30 14:23:59,822 INFO [main]
> org.apache.hadoop.hdfs.DFSOutputStream: replacing previously failed streamer
> #4: failed, block==null 2022-09-30 14:23:59,836 WARN [main]
> org.apache.hadoop.hdfs.DFSOutputStream: Cannot allocate parity block(index=3,
> policy=RS-3-2-1024k). Not enough datanodes? Exclude nodes=[] 2022-09-30
> 14:23:59,836 WARN [main] org.apache.hadoop.hdfs.DFSOutputStream: Cannot
> allocate parity block(index=4, policy=RS-3-2-1024k). Not enough datanodes?
> Exclude nodes=[] 2022-09-30 14:24:07,302 INFO [main]
> org.apache.hadoop.hdfs.DFSOutputStream: replacing previously failed streamer
> #3: failed, blk_-9223372036808887853_3095387 2022-09-30 14:24:07,303 INFO
> [main] org.apache.hadoop.hdfs.DFSOutputStream: replacing previously failed
> streamer #4: failed, block==null 2022-09-30 14:24:07,317 WARN [main]
> org.apache.hadoop.hdfs.DFSOutputStream: Cannot allocate parity block(index=4,
> policy=RS-3-2-1024k). Not enough datanodes? Exclude nodes=[] 2022-09-30
> 14:24:15,383 INFO [main] org.apache.hadoop.hdfs.DFSOutputStream: replacing
> previously failed streamer #4: failed, block==null 2022-09-30 14:24:15,395
> WARN [main] org.apache.hadoop.hdfs.DFSOutputStream: Cannot allocate parity
> block(index=4, policy=RS-3-2-1024k). Not enough datanodes? Exclude nodes=[]
> 2022-09-30 14:24:22,795 INFO [main] org.apache.hadoop.hdfs.DFSOutputStream:
> replacing previously failed streamer #4: failed, block==null 2022-09-30
> 14:24:22,812 WARN [main] org.apache.hadoop.hdfs.DFSOutputStream: Cannot
> allocate parity block(index=3, policy=RS-3-2-1024k). Not enough datanodes?
> Exclude nodes=[] 2022-09-30 14:24:22,812 WARN [main]
> org.apache.hadoop.hdfs.DFSOutputStream: Cannot allocate parity block(index=4,
> policy=RS-3-2-1024k). Not enough datanodes? Exclude nodes=[] 2022-09-30
> 14:24:31,352 INFO [main] org.apache.hadoop.hdfs.DFSOutputStream: replacing
> previously failed streamer #3: failed, blk_-9223372036808887133_3095476
> 2022-09-30 14:24:31,352 INFO [main] org.apache.hadoop.hdfs.DFSOutputStream:
> replacing previously failed streamer #4: failed, block==null
> discp out
> .....
> Error: java.io.IOException: File copy failed:
> ....
> Caused by: org.apache.hadoop.ipc.RemoteException(java.io.IOException): File
> /hive_warehouse/warehouse_old_snapshots/credit/.distcp.tmp.attempt_1663830633337_314191_m_000008_2
> could only be written to 2 of the 3 required nodes for RS-3-2-1024k. There
> are 50 datanode(s) running and no node(s) are excluded in this operation.
> at
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:2128)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.chooseTargetForNewBlock(FSDirWriteFileOp.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2706)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:875)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:561)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682)
> at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1497)
> at org.apache.hadoop.ipc.Client.call(Client.java:1443)
> at org.apache.hadoop.ipc.Client.call(Client.java:1353)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:228)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
> at com.sun.proxy.$Proxy13.addBlock(Unknown Source)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:510)
> at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
> at com.sun.proxy.$Proxy14.addBlock(Unknown Source)
> at
> org.apache.hadoop.hdfs.DFSOutputStream.addBlock(DFSOutputStream.java:1078)
> at
> org.apache.hadoop.hdfs.DFSStripedOutputStream.allocateNewBlock(DFSStripedOutputStream.java:479)
> at
> org.apache.hadoop.hdfs.DFSStripedOutputStream.writeChunk(DFSStripedOutputStream.java:525)
> at
> org.apache.hadoop.fs.FSOutputSummer.writeChecksumChunks(FSOutputSummer.java:217)
> at org.apache.hadoop.fs.FSOutputSummer.write1(FSOutputSummer.java:125)
> at org.apache.hadoop.fs.FSOutputSummer.write(FSOutputSummer.java:111)
> at
> org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:57)
> at java.io.DataOutputStream.write(DataOutputStream.java:107)
> at java.io.BufferedOutputStream.write(BufferedOutputStream.java:122)
> at
> org.apache.hadoop.tools.mapred.RetriableFileCopyCommand.copyBytes(RetriableFileCopyCommand.java:290)
> at
> org.apache.hadoop.tools.mapred.RetriableFileCopyCommand.copyToFile(RetriableFileCopyCommand.java:193)
> at
> org.apache.hadoop.tools.mapred.RetriableFileCopyCommand.doCopy(RetriableFileCopyCommand.java:123)
> at
> org.apache.hadoop.tools.mapred.RetriableFileCopyCommand.doExecute(RetriableFileCopyCommand.java:99)
> at
> org.apache.hadoop.tools.util.RetriableCommand.execute(RetriableCommand.java:87)
> {code}
>
> The data is written to a full disk Datanode. Is there any way to avoid not
> writing data to a full disk Datanode during discp?
> Balancer data is very slow, which affects the progress of the work
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